CN104791209A - Two-dimensional cylindrical guide rail axial piston pump - Google Patents
Two-dimensional cylindrical guide rail axial piston pump Download PDFInfo
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- CN104791209A CN104791209A CN201510151255.2A CN201510151255A CN104791209A CN 104791209 A CN104791209 A CN 104791209A CN 201510151255 A CN201510151255 A CN 201510151255A CN 104791209 A CN104791209 A CN 104791209A
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Abstract
The invention discloses a two-dimensional cylindrical guide rail axial piston pump which comprises a pump body, a cylinder body and a piston. The cylinder body is arranged in the pump body and fixedly connected with the pump body. The pump body is provided with an oil suction and drainage hole and a leaked oil return channel. A left end cover and a right end cover are fixedly installed at the left end and the right end of the pump body through clamping springs respectively. A left guide rail and a right guide rail which are provided with different roller rolling curved faces are fixedly arranged at the left end and the right end of the cylinder body respectively. The left guide rail and the right guide rail are staggered by 90 degrees. The piston is arranged in the center of an inner cavity of the cylinder body. The piston can do straight reciprocating motion in the axial direction of the inner cavity of the cylinder body. A left piston ring and a right piston ring which are concentric with the piston are installed at the left end and the right end of the piston respectively and fixed to the cylinder body. A left cavity is defined by the left piston ring, the left end of the piston and the cylinder body. A right cavity is defined by the right piston ring, the right end of the piston and the cylinder body. The volume of the left cavity and the volume of the right cavity are alternately changed along with the reciprocating motion of the piston.
Description
Technical field
The present invention relates to a kind of TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump, belong to the oil hydraulic pump in Fluid-transmission and control field and oil hydraulic motor.
Background technique
Piston Piston for pump and cylinder body are as groundwork component.When reciprocating in the piston hole of piston at cylinder body, there is volume-variation in the airtight swept volume chamber be made up of piston and cylinder body, completes suction, oil extraction process.According to the different spread patterns of piston in cylinder body, reciprocating pump is divided into radial and the large class of axial type two.Radial piston pump is comparatively large due to complex structure, volume, is substituted by axial piston pump in many occasions.The piston centre line parallel (or substantially parallel) of axial piston pump is in the axis of cylinder body.The good airproof performance of this type of pump, there is working pressure high (rated working pressure generally can reach 32-40MPa), under high pressure still can keep quite high volumetric efficiency (generally about 95%) and total efficiency (generally more than 90%), easily realize the advantage such as lightweight of variable and specific power; Be widely used in pressure processing machinery, materials handling equipment, engineering machinery, ship deck machinery, metallurgical machinery, cannon and field of space technology, and can by as high pressure and high pressure fuel source.
The working principle of the common axial piston pump of tradition: when transmission shaft drives cylinder body to rotate, cylinder body can drive piston rotation, by change between piston and clinoplain or and transmission shaft between angle, make piston do straight reciprocating motion in piston cavity.Rely on piston to-and-fro motion in cylinder bore, make seal operation cavity volume change to realize suction, force feed.The part of its inner relative movement of traditional axial piston pump is many, high to Material texture, requirement on machining accuracy, responsive to oil contamination, processing, use, the requirement safeguarded and cost higher, expensive; Cylinder body rotates with transmission shaft, and rotary inertia is large, causes starting, stops, the speed of response of speed governing is slow, be unfavorable for the output flow being carried out control pump by speed governing; In cylinder body, friction pair is more, and under high speed rotating, cylinder body temperature rise is very fast, and the wearing and tearing of the part such as thrust plate, piston directly affect working life and the durability of pump.In addition, due to the restriction of the working principle of reciprocating pump own, drive axis one week, each piston can only realize an oil suction and an oil extraction, and its discharge capacity is restricted.
Summary of the invention
In order to overcome the above-mentioned defect that existing axial piston pump exists, the invention provides that a kind of novel structure is compact, volume is little, lightweight, transmission simple, easily speed governing, discharge capacity are high, utilize the motion principle of piston dual free dimension (can move axially while rotation) to realize the TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump of continuous print suction oil.
The technical solution used in the present invention is:
TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump, comprises the pump housing, cylinder body and piston, and cylinder body is placed in the pump housing and is fixedly connected with the pump housing; The pump housing have suction oilhole and reveal oily drainback passage, the left and right two ends of the pump housing are installed with left and right end cap respectively by jump ring, it is characterized in that: the left and right two ends of described cylinder body are installed with the left rail and right guide rail with the different roller surface of rolling respectively, and left rail and right guide rail are staggeredly arranged in 90 degree mutually, namely the highs and lows of left rail is corresponding with the minimum point of right guide rail and peak respectively;
The lumen centers of described cylinder body is provided with piston, and described piston can do straight reciprocating motion along the axis of inner chamber of cylinder block; Be separately installed with the left plug ring concentric with piston and right plug ring at the left and right two ends of described piston, described left plug ring, right plug ring are separately fixed on cylinder body; Space that described left plug ring, piston left end and cylinder body enclose jointly forms left chamber, and the space that described right plug ring, piston right-hand member and cylinder body enclose jointly forms right chamber, and the volume of left chamber and right chamber interlocks with the to-and-fro motion of piston and changes; When piston is from high order end toward low order end axial motion, left chamber's volume becomes large gradually, and right cavity volume diminishes gradually; On the contrary, when piston is from low order end toward high order end axial motion, right cavity volume becomes large gradually, and left chamber's volume diminishes gradually;
Described piston is provided with shoulder, the surface of described shoulder offers four rectangle grooves be evenly arranged, and the notch position of four rectangle grooves is staggeredly arranged; The corresponding position of described cylinder body is evenly distributed with two group windows corresponding with four rectangle grooves, and two group windows are mutually through by opening at the circular groove of cylinder surface; During work, the rectangle groove on piston and the window on cylinder body are linked up, and volume becomes large chamber gradually by the rectangle groove of linking up and window from fuel tank oil suction, and chamber inner fluid is discharged by the groove of linking up and window by the chamber that volume reduces gradually;
The left end of described piston is provided with one shape pin axle, and the axle head of described one shape pin axle is symmetrically installed with one group of left bearing big roller, and the left end of described one shape pin axle is provided with a roller cover be fixedly connected with left end cap, and described one shape pin axle is fastened on piston; The right-hand member of described piston is provided with cross bearing pin, and the axle head of described cross bearing pin is symmetrically installed with one group of right bearing big roller and one group of bearing trundle for transmitting torque respectively, and described cross bearing pin is fastened on piston; Described left bearing big roller and right bearing big roller are separately positioned on described left rail and right guide rail, and can roll along left rail and right guide rail respectively;
Described cross bearing pin is arranged on by 2D coupling and has on the right end cap of through hole, drive fit crossed by brushless electric machine and described 2D coupling, described brushless electric machine transfers torque to bearing trundle by 2D coupling, band dynamic bearing trundle rotates, thus drive cross bearing pin, piston rotate together with one shape pin axle.When driven by motor 2D coupling rotates, 2D coupling transfers a torque to piston by the bearing trundle on cross bearing pin, thus piston is rotated, while piston rotates and to-and-fro motion realizes the switching of suction oil pocket and continuous print suction oil.
Described left rail is cylindrical body, and described cylindrical end face has the first arc-shaped curved surface concaved, and the cylindrical body at the minimum point two ends of the first described arc-shaped curved surface is symmetrically arranged with the mounting hole matched with pin; Described cylindrical center offers the first through hole mated with hexagon socket head cap screw.
Described right guide rail is cylindrical body, and described cylindrical end face has the second arc-shaped curved surface of outwardly convex, and the cylindrical body at the minimum point two ends of the second described arc-shaped curved surface is symmetrically arranged with the mounting hole matched with pin; Described cylindrical center offers the second through hole mated with hexagon socket head cap screw.
Described right bearing big roller and bearing trundle are separately positioned on the groove of 2D coupling; Described 2D coupling is arranged on by the first Steel Cable Baffle Ring and lock washer and has on the right end cap of through hole.
The right-hand member of described 2D coupling has the rectangle keyway coordinated with brushless electric machine.
The J-shaped oil seal without framework of frictional force effect and copper sheet for sealing and reduce coupling and end cap is installed between described right end cap and 2D coupling.
Described left bearing big roller, right bearing big roller, bearing trundle are made up of wheel case, rolling bearing, the second Steel Cable Baffle Ring and lock washer respectively, described rolling bearing is set on axle head, and described wheel case is set on rolling bearing by the second Steel Cable Baffle Ring and lock washer.
Described left and right end cap offers the circular groove for placing O-ring seals.
Described left plug ring, right plug ring are fixed on cylinder body respectively by the 3rd Steel Cable Baffle Ring.
Described one shape pin axle, cross bearing pin are fastened on the left and right end of piston respectively by hexagon socket head cap screw.
Working principle of the present invention:
Piston and cross bearing pin, one shape pin axle are fixed together by hexagon socket head cap screw, brushless electric machine transfers torque to the bearing trundle on cross bearing pin by 2D coupling, band dynamic bearing trundle rotates, right bearing big roller is along with while bearing trundle rotates together with 2D coupling, and right bearing big roller also can roll on right guide rail.In like manner, on left end one shape pin axle, left bearing big roller also can roll while rotation on interior guide rail.When left bearing big roller is rolled to the peak of left rail, namely right bearing big roller is rolled to the minimum point of right guide rail, and piston moves axially to high order end; When left bearing big roller is rolled to the minimum point of left rail, namely right bearing big roller is rolled to the peak of right guide rail, and piston moves axially to low order end.Along with left bearing big roller and right bearing big roller continuous rolling on left rail, right guide rail respectively, piston just can be made to carry out axis to-and-fro motion continuously, achieve piston is axially having continuous print to-and-fro motion again while longitudinally rotating continuously.
Beneficial effect of the present invention is embodied in:
1, axle and piston integrated design is proposed, overall structure is simplified greatly, two freedom of movement (2D) structure of the rotation of piston and slip is utilized to instead of the oil distribution casing structure of conventional axial reciprocating pump, realize continuous suction functional oil, and to-and-fro motion once, suction oil is each once, and comparatively conventional axial reciprocating pump is once many.
2, compared with many friction pairs structure of conventional piston pump, the present invention only has friction pair, and efficiency is greatly improved.
3, achieve microminiaturization, under the prerequisite of guaranteed flow, cost is reduced greatly.
4, the rectangle groove on piston and the window on cylinder body are linked up, and volume becomes large chamber gradually by the rectangle groove of linking up and window from fuel tank oil suction, and chamber inner fluid is discharged by the groove of linking up and window by the chamber that volume reduces gradually; The successive to-and-fro motion of piston makes the constantly staggered change of the volume of left and right chamber, realizes continuous print oil suction and oil extraction.
Accompanying drawing explanation
Fig. 1 is the structural representation of 2D axial piston pump.
Fig. 2 is 2D coupling explosive view.
Fig. 3 is that piston and one shape pin axle, cross bearing pin assemble schematic diagram.
Fig. 4 a is piston schematic diagram.
Fig. 4 b is the A-A sectional view in Fig. 4 a.
Fig. 5 a is cylinder body schematic diagram.
Fig. 5 b is the sectional drawing of the B-B in Fig. 5 a.
Fig. 6 a be piston movement to high order end time, groove e, f, g, h on piston not with on cylinder body window a, b, c, d occur link up schematic diagram.
Fig. 6 b is the D-D sectional view in Fig. 6 a.
Fig. 6 c is piston rotation and starts toward right-hand member mobile, the schematic diagram that groove e, f, g, h on piston link up with window a, d, b, the c on cylinder body respectively.
Fig. 6 d is the E-E sectional view in Fig. 6 c.
Fig. 6 e is piston when moving to low order end, the schematic diagram that groove e, f, g, h on piston no longer do not link up with window a, b, c, the d on cylinder body.
Fig. 6 f is the F-F sectional view in Fig. 6 e.
Fig. 7 is left rail schematic diagram.
Fig. 8 is right guide rail schematic diagram
Fig. 9 is left rail or right guide rail shift diagram.
Embodiment
Referring to figs. 1 through Fig. 9, TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump, comprises the pump housing 1, cylinder body 2 and piston 3, and cylinder body 2 is placed in the pump housing 1 and is fixedly connected with the pump housing 1; The pump housing 1 have suction oilhole and reveal oily drainback passage, the left and right two ends of the pump housing 1 are installed with left and right end cap 5,6 respectively by jump ring 4, the left and right two ends of described cylinder body 2 are installed with the left rail 7 and right guide rail 8 with the different roller surface of rolling respectively, and left rail 7 and right guide rail 8 are staggeredly arranged in 90 degree mutually, namely the highs and lows of left rail 7 is corresponding with the minimum point of right guide rail 8 and peak respectively;
The lumen centers of described cylinder body 2 is provided with piston 3, and described piston 3 can do straight reciprocating motion along the axis of cylinder body 2 inner chamber; Be separately installed with the left plug ring 9 concentric with piston 3 and right plug ring 10 at the left and right two ends of described piston 3, described left plug ring 9, right plug ring 10 are separately fixed on cylinder body 2; Space that described left plug ring, piston left end and cylinder body enclose jointly forms left chamber, and the space that described right plug ring, piston right-hand member and cylinder body enclose jointly forms right chamber, and the volume of left chamber and right chamber interlocks with the to-and-fro motion of piston and changes; When piston is from high order end toward low order end axial motion, left chamber's volume becomes large gradually, and right cavity volume diminishes gradually; On the contrary, when piston is from low order end toward high order end axial motion, right cavity volume becomes large gradually, and left chamber's volume diminishes gradually;
Described piston 3 is provided with shoulder, the surface of described shoulder offers four rectangle grooves e, f, g, h being evenly arranged, and the notch position of four rectangle grooves is staggeredly arranged; The corresponding position of described cylinder body 2 is evenly distributed with two group window a, c and bs, the d corresponding with four rectangle grooves, and two group windows are mutually through by opening at the circular groove on cylinder body 2 surface; During work, the rectangle groove on piston 3 and the window on cylinder body are linked up, and volume becomes large chamber gradually by the rectangle groove of linking up and window from fuel tank oil suction, and chamber inner fluid is discharged by the groove of linking up and window by the chamber that volume reduces gradually;
The left end of described piston 3 is provided with one shape pin axle 11, the axle head of described one shape pin axle 11 is symmetrically installed with one group of left bearing big roller 111, the left end of described one shape pin axle 11 is provided with a roller cover be fixedly connected with left end cap 13, and described one shape pin axle 11 is fastened on piston 3; The right-hand member of described piston 3 is provided with cross bearing pin 12, and the axle head of described cross bearing pin 12 is symmetrically installed with one group of right bearing big roller 121 and one group of bearing trundle 122 for transmitting torque respectively, and described cross bearing pin 12 is fastened on piston 3; Described left bearing big roller 111 and right bearing big roller 121 are separately positioned on described left rail 7 and right guide rail 8, and can roll along left rail 7 and right guide rail 8 respectively;
Described cross bearing pin 12 is arranged on by 2D coupling 14 and has on the right end cap 6 of through hole, brushless electric machine 15 crosses drive fit with described 2D coupling 14, described brushless electric machine 15 transfers torque to bearing trundle 122 by 2D coupling 14, band dynamic bearing trundle 122 rotates, thus drive cross bearing pin 12, piston 3 rotate together with one shape pin axle 11.When motor 15 drives 2D coupling 14 to rotate, 2D coupling 14 transfers a torque to piston 3 by the bearing trundle 122 on cross bearing pin 12, thus piston 3 is rotated, while piston 3 rotates and to-and-fro motion realizes the switching of suction oil pocket and continuous print suction oil.
Described left rail 7 is in cylindrical body, and described cylindrical end face has the first arc-shaped curved surface 71 concaved, and the cylindrical body at the minimum point two ends of the first described arc-shaped curved surface 71 is symmetrically arranged with the mounting hole 72 matched with pin; Described cylindrical center offers the first through hole 73 mated with hexagon socket head cap screw.
Described right guide rail 8 is in cylindrical body, and described cylindrical end face has the second arc-shaped curved surface 81 of outwardly convex, and the cylindrical body at the minimum point two ends of the second described arc-shaped curved surface is symmetrically arranged with the mounting hole 82 matched with pin; Described cylindrical center offers the second through hole 83 mated with hexagon socket head cap screw.
Described right bearing big roller 121 and bearing trundle 122 are separately positioned on the groove 141 of 2D coupling 14; Described 2D coupling 14 is arranged on by the first Steel Cable Baffle Ring 161 and lock washer 162 and has on the right end cap 6 of through hole.
The right-hand member of described 2D coupling 14 has the rectangle keyway coordinated with brushless electric machine 15.
The J-shaped oil seal without framework 18 of frictional force effect and copper sheet 19 for sealing and reduce coupling and end cap is installed between described right end cap 6 and 2D coupling 14.
Described left bearing big roller 111, right bearing big roller 121, bearing trundle 122 are made up of wheel case 1212, rolling bearing 1211, second Steel Cable Baffle Ring 1214 and lock washer 1213 respectively, described rolling bearing is set on axle head, and described wheel case is set on rolling bearing by the second Steel Cable Baffle Ring and lock washer.
Described left and right end cap 5,6 offers the circular groove for placing O-ring seals 20.
Described left plug ring, right plug ring 9,10 are fixed on cylinder body 2 respectively by the 3rd Steel Cable Baffle Ring 21.
Described one shape pin axle 11, cross bearing pin 12 are fastened on the left and right end of piston 3 respectively by hexagon socket head cap screw 17.
Working principle is as follows:
Piston and cross bearing pin, one shape pin axle are fixed together by hexagon socket head cap screw, brushless electric machine transfers torque to the bearing trundle on cross bearing pin by 2D coupling, band dynamic bearing trundle rotates, right bearing big roller is along with while bearing trundle rotates together with 2D coupling, and right bearing big roller also can roll on right guide rail.In like manner, on left end one shape pin axle, left bearing big roller also can roll while rotation on interior guide rail.When left bearing big roller is rolled to the peak of left rail, namely right bearing big roller is rolled to the minimum point of right guide rail, and piston moves axially to high order end; When left bearing big roller is rolled to the minimum point of left rail, namely right bearing big roller is rolled to the peak of right guide rail, and piston moves axially to low order end.Along with left bearing big roller and right bearing big roller continuous rolling on left rail, right guide rail respectively, piston just can be made to carry out axis to-and-fro motion continuously, achieve piston is axially having continuous print to-and-fro motion again while longitudinally rotating continuously.
In the present embodiment, as shown in Fig. 4 a to 5b, four rectangle grooves on piston are respectively e, f, g, h, and its notch position staggers mutually, and namely e, h notch is contrary with f, g notch direction.Two group windows corresponding with rectangle groove on cylinder body are a, c and b, d, a, c window and b, d window mutually through by opening at the circular groove of cylinder surface.
As shown in Fig. 6 a to 6f, piston rotates counterclockwise (seeing from left to right), and a, b, c, d are the window channels on cylinder body, and a, c are suction passage, and b, d are oil drain passage.E, f, g, h are the rectangle groove on piston.
Fig. 6 a and 6b be piston movement to high order end time, rectangle groove e, f, g, h now on piston do not link up with window a, b, c, d on cylinder body.
Start mobile while piston rotation toward right-hand member, as described relative to figs. 6c and 6d, rectangle groove e, f, g, h on piston link up with window a, d, b, c on cylinder body respectively, and cavity volume becomes large left chamber gradually due to from absorption, by ditch circulation passage e-a, h-c oil suction from fuel tank; Fluid is extruded by ditch circulation passage f-d, g-b by the right chamber that volume diminishes gradually by the oil in chamber.
As shown in Fig. 6 e and 6f, when piston moves to low order end, rectangle groove e, f, g, h now on piston no longer do not link up with window a, b, c, d on cylinder body.When piston is rotated further, then piston starts toward left movement, and right chamber begins through ditch circulation passage f-a, g-c from fuel tank oil suction; Oil is extruded by ditch circulation passage e-b, h-d by left chamber.
Content described in this specification embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (10)
1. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump, comprises the pump housing, cylinder body and piston, and cylinder body is placed in the pump housing and is fixedly connected with the pump housing; The pump housing have suction oilhole and reveal oily drainback passage, the left and right two ends of the pump housing are installed with left and right end cap respectively by jump ring, it is characterized in that: the left and right two ends of described cylinder body are installed with the left rail and right guide rail with the different roller surface of rolling respectively, and left rail and right guide rail are staggeredly arranged in 90 degree mutually, namely the highs and lows of left rail is corresponding with the minimum point of right guide rail and peak respectively;
The lumen centers of described cylinder body is provided with piston, and described piston can do straight reciprocating motion along the axis of inner chamber of cylinder block; Be separately installed with the left plug ring concentric with piston and right plug ring at the left and right two ends of described piston, described left plug ring, right plug ring are separately fixed on cylinder body; Space that described left plug ring, piston left end and cylinder body enclose jointly forms left chamber, and the space that described right plug ring, piston right-hand member and cylinder body enclose jointly forms right chamber, and the volume of left chamber and right chamber interlocks with the to-and-fro motion of piston and changes; When piston is from high order end toward low order end axial motion, left chamber's volume becomes large gradually, and right cavity volume diminishes gradually; On the contrary, when piston is from low order end toward high order end axial motion, right cavity volume becomes large gradually, and left chamber's volume diminishes gradually;
Described piston is provided with shoulder, the surface of described shoulder offers four rectangle grooves be evenly arranged, and the notch position of four rectangle grooves is staggeredly arranged; The corresponding position of described cylinder body is evenly distributed with two group windows corresponding with four rectangle grooves, and two group windows are mutually through by opening at the circular groove of cylinder surface; During work, the rectangle groove on piston and the window on cylinder body are linked up, and volume becomes large chamber gradually by the rectangle groove of linking up and window from fuel tank oil suction, and chamber inner fluid is discharged by the groove of linking up and window by the chamber that volume reduces gradually;
The left end of described piston is provided with one shape pin axle, and the axle head of described one shape pin axle is symmetrically installed with one group of left bearing big roller, and the left end of described one shape pin axle is provided with a roller cover be fixedly connected with left end cap, and described one shape pin axle is fastened on piston; The right-hand member of described piston is provided with cross bearing pin, and the axle head of described cross bearing pin is symmetrically installed with one group of right bearing big roller and one group of bearing trundle for transmitting torque respectively, and described cross bearing pin is fastened on piston; Described left bearing big roller and right bearing big roller are separately positioned on described left rail and right guide rail, and can roll along left rail and right guide rail respectively;
Described cross bearing pin is arranged on by 2D coupling and has on the right end cap of through hole, drive fit crossed by brushless electric machine and described 2D coupling, described brushless electric machine transfers torque to bearing trundle by 2D coupling, band dynamic bearing trundle rotates, thus drive cross bearing pin, piston rotate together with one shape pin axle.
2. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 1, it is characterized in that: described left rail is cylindrical body, described cylindrical end face has the first arc-shaped curved surface concaved, and the cylindrical body at the minimum point two ends of the first described arc-shaped curved surface is symmetrically arranged with the mounting hole matched with pin; Described cylindrical center offers the first through hole mated with hexagon socket head cap screw.
3. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 1 or 2, it is characterized in that: described right guide rail is cylindrical body, described cylindrical end face has the second arc-shaped curved surface of outwardly convex, and the cylindrical body at the minimum point two ends of the second described arc-shaped curved surface is symmetrically arranged with the mounting hole matched with pin; Described cylindrical center offers the second through hole mated with hexagon socket head cap screw.
4. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 3, is characterized in that: described right bearing big roller and bearing trundle are separately positioned on the groove of 2D coupling; Described 2D coupling is arranged on by the first Steel Cable Baffle Ring and lock washer and has on the right end cap of through hole.
5. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 4, is characterized in that: the right-hand member of described 2D coupling has the rectangle keyway coordinated with brushless electric machine.
6. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 5, is characterized in that: install the J-shaped oil seal without framework of frictional force effect and the copper sheet for sealing and reduce coupling and end cap between described right end cap and 2D coupling.
7. the TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as described in one of claim 4 ~ 6, it is characterized in that: described left bearing big roller, right bearing big roller, bearing trundle are made up of wheel case, rolling bearing, the second Steel Cable Baffle Ring and lock washer respectively, described rolling bearing is set on axle head, and described wheel case is set on rolling bearing by the second Steel Cable Baffle Ring and lock washer.
8. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 7, is characterized in that: described left and right end cap offers the circular groove for placing O-ring seals.
9. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 8, is characterized in that: described left plug ring, right plug ring are fixed on cylinder body respectively by the 3rd Steel Cable Baffle Ring.
10. TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial piston pump as claimed in claim 9, is characterized in that: described one shape pin axle, cross bearing pin are fastened on the left and right end of piston respectively by hexagon socket head cap screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510151255.2A CN104791209B (en) | 2015-04-01 | 2015-04-01 | TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial poiston pump |
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| CN201510151255.2A CN104791209B (en) | 2015-04-01 | 2015-04-01 | TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial poiston pump |
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| CN104791209B CN104791209B (en) | 2017-01-04 |
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Cited By (5)
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| CN106089621A (en) * | 2016-07-19 | 2016-11-09 | 浙江工业大学 | Two dimension cone roller piston pump |
| CN106837725A (en) * | 2016-12-29 | 2017-06-13 | 浙江工业大学 | Two-dimensional axial plunger displacement pump |
| CN108661874A (en) * | 2018-05-11 | 2018-10-16 | 浙江工业大学 | A kind of shaftless two-dimentional plunger variable electric-motor pump |
| CN112610438A (en) * | 2020-11-23 | 2021-04-06 | 河南航天液压气动技术有限公司 | Piston pump |
| CN114263582A (en) * | 2021-12-16 | 2022-04-01 | 北京空天技术研究所 | Plunger structure and double-motion-freedom-degree piston pump |
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